Chapter - 7 India- Location, Political Divisions and Physical Divisions

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Chapter - 7 India- Location, Political Divisions and Physical Divisions Geography Class VI Chapter - 7 India- Location, Political Divisions and Physical Divisions India is a country of vast geographical expanse. In the north, it is bound by the lofty Himalayas. The Arabian Sea in the west, the Bay of Bengal in the east and the Indian Ocean in the south, wash the shores of the Indian peninsula. India has an area of about 3.28 million sq. km. India accounts for about 2.4 % of total surface area of the world. India is 7th largest country in the world, after Russia, Canada, China, USA, Brazil and Australia. India, after China, is the second most populous country in the world. Location and Extent India is located in the northern and eastern hemisphere. The Tropic of Cancer (23°30'N) passes almost halfway through the country. From south to north, main land of India extends between 8°4'N and 37°6'N latitude. From west to east, India extends between 68°7'E and 97°25'E longitudes The north-south extent from Kashmir to Kanyakumari is about 3,214 km. And the east-west extent from Arunachal Pradesh to Gujarat is about 2,933 km. The length of coastline along the mainland of India is about 6,100km and that including the island group is about 7,514km.the frontier is about 15,200 km. India has common land boundaries with Pakistan, Afghanistan in north- west, with China, Nepal and Bhutan in north and Myanmar and Bangladesh in east. 1 |Page Geography Class VI Our neighbours across the sea are Sri Lanka and Maldives. India and Sri Lanka are separates by narrow stretch of water called Palk Strait. Due to great longitudinal extent of about 29°, there could be wide differences in local time of places located at two extreme points of India. As such, the difference between these two points would be of about two hours. The local time changes by four minutes for every one degree of longitude. The sun rises two hours earlier in the east (Arunachal Pradesh) than in the west (Gujarat). The local time of longitude of 82°30'E has been taken as the Indian Standard Time. This meridian or longitude is also termed as the Standard Meridian of India. Political Division India is a vast country. For administrative purposes, the country is divided into 29 States and 7 Union Territories. Delhi is the national capital. The states have been formed mainly on the basis of languages. Rajasthan is the largest state and Goa is the smallest state in terms of area. The states are further divided into districts. In the latest re-organization of state Uttarakhand, Jharkhand and Chhattisgarh were created out of the state of Uttar Pradesh, Bihar and Madhya Pradesh respectively. 9 states and three union territories are located along the coast. These states are Gujarat, Maharashtra, Goa, Karnataka, Kerala, Tamil Nadu, Andhra Pradesh, Orissa and West Bengal. 2 |Page Geography Class VI Seven states in the north-eastern part of India are called Seven Sisters. They are Arunachal Pradesh, Assam, Meghalaya, Mizoram, Nagaland, Manipur and Tripura. 3 |Page Geography Class VI States and neighbouring countries States having common boundary with Pakistan are- Gujarat, Rajasthan, Punjab and Jammu and Kashmir. States having common boundary with China are- Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim and Arunachal Pradesh. States having common boundary with Nepal are- Uttar Pradesh, Bihar, West Bengal, Uttarakhand and Sikkim. INDIA- Physical Features India is vast country and has a great variety of physical features such as mountains, plateaus, plains, coasts and islands. India can be broadly divided into following 4 physical divisions: • The northern mountains • The northern plains • The peninsular plateaus • The coastal plains and islands 4 |Page Geography Class VI THE NORTHERN MOUNTAINS Himalaya means ‘the abode of snow’. The Himalayan Mountains are divided into three main parallel ranges. • Great Himalaya OR Himadri:- It is the northernmost range .The world’s highest peaks are located in this range. • Middle Himalaya OR Himachal:- lies to the south of Himadri. Many popular hill stations are situated here such as Shimla, Dalhousie ,Kullu, Manali, Mussoorie, Nainital and Darjeeling • The Shiwalik OR outer Himalaya is the southernmost mountain ranges. These ranges are made up of loose deposits of soft rocks, mud and silt. Landslides are common in this part of the Himalayas. 5 |Page Geography Class VI THE NORTHERN PLAINS • They are generally level and flat. These are formed by the alluvial deposits laid down by the rivers– the Indus, the Ganga, the Brahmaputra and their tributaries. These river plains provide fertile land for cultivation. That is the reason for high concentration of population in these plains. • The Sunderban delta is formed where the Ganga and Brahmaputra flow. • The northern plains are divided into three parts: 1. The Rajasthan plain 2. The Ganga basin 3. The Brahmaputra valley. THE PENINSULAR PLATEAUS • To the south of northern plains lies the peninsular plateau. • It is triangular in shape. The relief is highly uneven. This is a region with numerous hill ranges and valleys. Aravali hills, one of the oldest ranges of the world, border it on the north-west side. The Vindhyas and the Satpuras are the important ranges. The rivers Narmada and Tapi flow through these ranges. These are west-flowing rivers that drain into the Arabian Sea. • Narmada River divides the entire plateau region into two parts –the Central Highlands and the Deccan plateau. • The Central Highlands- Theses are a series of plateaus, such as Malwa, Bundelkand, Baghelkhand and Chotanagpur. These plateaus are made up of hard igneous rocks. 6 |Page Geography Class VI • The Deccan plateau-It extends from the Vindhyas in the north to southern tip of the peninsula. It is bounded by Western Ghats and the Eastern Ghats. Both these hill ranges meet at the Nilgiri hills THE COASTAL PLAINS • The Western Ghats known as Sahyadri, have Sahyadri hills, the Niligiri, the Anaimalai and the Cardamom hills. • While the Western Ghats are almost continuous, the Eastern Ghats are broken and uneven .The plateau is rich in minerals like coal and iron-ore. To the West of the Western Ghats and the East of Eastern Ghats lie the coastal plains are very narrow. • The eastern Coastal plains are much broader. There are a number of east flowing rivers. The rivers Mahanadi, Godavari, Krishna and Kaveri drain into the Bay of Bengal These rivers have formed fertile deltas at their mouth. THE ISLANDS • There are two main group of island .One of them is the Lakshadweep island in the Arabian sea and the other is the Andaman and Nicobar island in the Bay of Bengal. Most of these islands are mountainous and are covered with thick forests. Chapter – 6 Major Landforms of the Earth Introduction to landforms 7 |Page Geography Class VI The surface of the earth is not the same everywhere. The earth has an infinite variety of landforms. Some parts of the lithosphere may be rugged and some flat. These landforms are a result of two processes. The ground you are standing on is slowly moving. Within the earth, a continuous movement is taking place. The first or the internal process leads to the upliftment and sinking of the earth’s surface at several places. The second or the external process is the continuous wearing down and rebuilding of the land surface. The wearing away of the earth’s surface is called erosion. The surface is being lowered by the process of erosion and rebuilt by the process of deposition. These two processes are carried out by running water, ice and wind. Broadly, we can group different landforms depending on elevation and slope as mountains, plateaus and plains. Mountain A mountain is any natural elevation of the earth surface. The mountains may have a small summit and a broad base. It is considerably higher than the surrounding area. Some mountains are even higher than the clouds. As you go higher, the climate becomes colder. In some mountains, there are permanently frozen rivers of ice. They are called glaciers. Mountains may be arranged in a line known as range. Many mountain systems consist of a series of parallel ranges extending over hundreds of kilometers. The Himalayas, the Alps and the Andes are mountain ranges of Asia, Europe and South America, respectively. Type of mountain There are three types of mountains- Fold Mountains, Block Mountains and the Volcanic Mountains. 8 |Page Geography Class VI 1. Fold Mountains- The Himalayan Mountains and the Alps are young fold mountains with rugged relief and high conical peaks. The Aravali range in India is one of the oldest fold mountain systems in the world. The range has considerably worn down due to the processes of erosion. The Appalachians in North America and the Ural mountains in Russia have rounded features and low elevation. They are very old fold mountains. 2. Block Mountains – They are created when large areas are broken and displaced vertically. The uplifted blocks are termed as horsts and the lowered blocks are called graben. The Rhine valley and the Vosges Mountain in Europe are examples of such mountain systems. 9 |Page Geography Class VI 3. Volcanic mountains These are formed due to volcanic activity. Mt.Kilimanjaro in Africa and Mt.Fujiyama in Japan are examples of such mountains. Mountains are very useful. The mountains are a storehouse of water. Many rivers have their source in the glaciers in the mountains. Reservoirs are made and the water is harnessed for the use of people. Water from the mountains is also used for irrigation and generation of hydro-electricity. The river valleys and terraces are ideal for cultivation of crops.
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